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Nexperia USA Inc. BC847BW-QF
- Part No.:
- BC847BW-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- SC-70, SOT-323
- Datasheet:
-
BC847BW-QF.pdf
- Description:
- TRANS NPN 45V 0.1A SOT-323
- Quantity:
- Payment:
- Shipping:
Inventory:36,702
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Product details
Overview
BC847BW-Q from Nexperia is an AEC-Q101-qualified NPN general-purpose transistor in SOT323 (SC-70) package, rated for 45 V VCEO, 100 mA IC, and DC current gain (hFE) of 200–450 at VCE = 5 V and IC = 2 mA. It serves as a low-power switching or linear amplification device in automotive signal conditioning, sensor interface, and LED driver stages.
For engineers reviewing the BC847BW-Q datasheet, BC847BW-Q pinout, BC847BW-Q application, or BC847BW-Q equivalent, this page delivers verified electrical parameters, automotive-grade qualification status, thermal resistance (625 K/W), saturation voltage (200–400 mV at IC = 100 mA), and precise SC-70 terminal mapping - all critical for board-level reliability validation and BOM replacement decisions.
Technical Context
This transistor operates as a discrete current-controlled switch or small-signal amplifier with fixed polarity (NPN), requiring external base biasing. Its hFE binning (B-grade: 200–450) enables predictable gain matching in analog feedback paths and consistent turn-on behavior in digital logic interfacing.
Qualified to AEC-Q101, it supports operation from −65 °C to +150 °C ambient, with absolute maximum ratings including 50 V VCBO, 6 V VEBO, and 200 mW Ptot on FR4 PCB - confirming suitability for under-hood automotive modules where thermal cycling and voltage transients are present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Maximum collector-emitter voltage before breakdown; defines safe operating range in 12 V/24 V automotive supply rails. |
| IC | 100 mA continuous - Supports load switching up to ~100 mA (e.g., small relays, indicator LEDs, logic-level translators). |
| hFE | 200–450 @ VCE = 5 V, IC = 2 mA - Enables stable bias design with minimal base drive current variation across temperature. |
| VCE(sat) | 200–400 mV @ IC = 100 mA, IB = 5 mA - Ensures low conduction loss in saturated switching applications, reducing power dissipation. |
| Rth(j-a) | 625 K/W - Thermal resistance on standard FR4 PCB; informs derating curves for ambient temperatures above 25 °C. |
| Tj(max) | 150 °C - Junction temperature limit; combined with Rth(j-a), sets max allowable power dissipation at given ambient. |
| fT | 100 MHz - Transition frequency at VCE = 5 V, IC = 10 mA; confirms usability in audio-frequency amplification and low-speed digital switching. |
Pinout & Package
SOT323 (SC-70) plastic surface-mounted package: ultra-compact 3-pin footprint (2.2 mm × 1.35 mm × 0.95 mm height), optimized for high-density automotive PCBs with reflow-compatible solder land pattern per Fig. 15.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base (B) | Current-controlled input node; requires series resistor to limit IB and ensure saturation or linear operation. |
| 2 | Emitter (E) | Common reference terminal; connected to ground or low-side return path in most switching configurations. |
| 3 | Collector (C) | Output current sink node; ties to load (e.g., LED anode, relay coil) when used in low-side switch topology. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use per stress test standard - eliminates need for additional qualification testing in Tier-1 modules. |
| Three hFE bins (W/A/B/C) | B-grade (200–450) enables tighter gain control in analog circuits versus generic W-bin (110–800), reducing calibration overhead. |
| Low VCE(sat) | 200–400 mV at full 100 mA load ensures <100 mW conduction loss - critical for thermally constrained ECUs. |
| SC-70 footprint compatibility | Standardized 0.65 mm pitch allows automated placement and reflow using industry-standard SMT equipment and stencil designs. |
| −65 °C to +150 °C operation | Full specification over extended temperature range supports engine bay, transmission, and ADAS sensor electronics. |
Applications
| Automotive Door Module Switching | Engine Control Unit Signal Conditioning |
|---|---|
|
Use Scenario: Driving window lift motor enable signals and door lock actuator coils in body control modules. IC Role / Device Role / Timing Role: Low-side switch controlling 12 V inductive loads with flyback protection. Use Value: 45 V VCEO withstands load dump transients; 100 mA rating matches typical solenoid hold current; AEC-Q101 ensures field reliability. |
Use Scenario: Amplifying oxygen sensor (O₂) output signals prior to ADC sampling in ECU front-end circuitry. IC Role / Device Role / Timing Role: Small-signal common-emitter amplifier with stable hFE binning for accurate gain setting. Use Value: 200–450 hFE minimizes gain drift across temperature; 100 MHz fT preserves signal fidelity up to 10 kHz bandwidth. |
| LED Driver in Instrument Cluster | Level Translation for CAN Transceiver Bias |
|
Use Scenario: Constant-current switching for backlight LEDs in automotive instrument clusters with PWM dimming. IC Role / Device Role / Timing Role: Saturated switch modulating LED current via base-pulse width control. Use Value: 200–400 mV VCE(sat) limits power loss and self-heating during 100% duty cycle operation. |
Use Scenario: Providing bias current to CAN transceiver standby mode circuitry in infotainment head units. IC Role / Device Role / Timing Role: Current source for pull-up/pull-down networks in isolated CAN bus interface stages. Use Value: Tight hFE binning ensures repeatable current sourcing accuracy; −65 °C to +150 °C rating covers full vehicle thermal envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN general-purpose transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC847B-Q | No automotive qualification; identical hFE bin (200–450) and SOT23 package. | Limited to non-automotive industrial or consumer use due to lack of AEC-Q101 certification. | Select only if automotive compliance is not required and SOT23 footprint is preferred over SC-70. |
| MMBT3904LT1G | Lower VCEO (40 V), wider hFE range (100–300), SOT23-3 package, AEC-Q101 qualified. | Marginally lower voltage headroom; less gain consistency at low IC; same automotive qualification level. | Choose when legacy SOT23 layout reuse is prioritized and 40 V rating suffices for target rail voltage. |
Compared with BC847BW-Q, BC847B-Q omits automotive qualification but retains identical gain binning and electrical specs, while MMBT3904LT1G trades 5 V lower breakdown voltage and broader hFE spread for SOT23 compatibility - making BC847BW-Q optimal where SC-70 density and guaranteed 45 V/200–450 hFE are mandatory.
Availability
BC847BW-Q is available at Aetrix Electronics and suitable for automotive body control modules, engine management systems, and instrument cluster electronics requiring stable component supply with AEC-Q101 assurance and SC-70 space efficiency.
Supply support for BC847BW-Q includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
The BC847xW-Q series targets cost-sensitive, space-constrained automotive subsystems requiring robust, standardized NPN transistors - delivering AEC-Q101 compliance without sacrificing performance or manufacturability.
FAQ
Is BC847BW-Q pin-compatible with BC847B-Q?
Yes, both share identical SOT323 (SC-70) pinout: Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector. However, BC847BW-Q adds AEC-Q101 qualification and uses a different marking code (1F%) versus BC847B-Q's non-automotive marking, so direct substitution requires validation of qualification requirements.
What is the maximum allowable power dissipation at 85 °C ambient?
At Tamb = 85 °C, derated power dissipation is calculated as (150 °C − 85 °C) / 625 K/W = 104 mW. This assumes mounting on FR4 PCB with single-sided copper and standard footprint per datasheet condition [1], and must be further reduced if airflow or heatsinking is absent.
Can BC847BW-Q replace BC847CW-Q in a circuit?
No - BC847CW-Q has higher hFE (420–800), resulting in significantly greater gain sensitivity to base current. Substituting BC847BW-Q (200–450) may cause insufficient collector current or unstable bias in circuits designed for CW-grade gain, especially at low IC or elevated temperature.
Does BC847BW-Q support wave soldering?
Yes, the SOT323 package is qualified for wave soldering per Figure 16 footprint (sot323_fw), with recommended solder land dimensions of 3.65 mm × 2.1 mm and 1.425 mm × 4.6 mm solder resist openings. Preheating and flux selection must comply with J-STD-020 guidelines for moisture sensitivity level (MSL) 1 devices.
BC847BW-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BC847xW-Q
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 400mV @ 5mA, 100mA
- Current - Collector Cutoff (Max):
- 15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 200 @ 2mA, 5V
- Power - Max:
- 200 mW
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BC847BW-QF FAQ
1.How can I place an order for BC847BW-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BC847BW-QF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BC847BW-QF reliable?
The price and inventory of BC847BW-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC847BW-QF is usually 5 days.
3.What payment methods are accepted for BC847BW-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC847BW-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC847BW-QF?
BC847BW-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC847BW-QF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BC847BW-QF?
For technical support, including BC847BW-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC847BW-QF requirements.
6.How does Aetrix verify that BC847BW-QF is sourced from the original manufacturer or authorized distributors?
All BC847BW-QF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BC847BW-QF meets industry standards.
7.What is the process for return or replacement of BC847BW-QF?
All BC847BW-QF units undergo pre-shipment inspection (PSI). If there is an issue with BC847BW-QF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BC847BW-QF part is unused and in its original packaging.
Return procedure for BC847BW-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC847BW-QF Tags
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